How can you tell how much rain has fallen?
Christopher Martinez
Published Mar 31, 2026
How can you tell how much rain has fallen?
A rain gauge basically collects water falling on it and records the change over time in the rainfall depth, which is usually expressed in mm. You can get much more detailed information with disdrometers.
How much rain has Washington state had this year?
Precipitation Rankings, October 2021
| Period | Value | Wettest/Driest Since |
|---|---|---|
| Jul–Oct 2021 4-Month | 9.09″ (230.89mm) | Wettest since: 2019 |
| Jun–Oct 2021 5-Month | 10.50″ (266.70mm) | Driest since: 2020 |
| Wettest since: 2016 | ||
| May–Oct 2021 6-Month | 11.73″ (297.94mm) | Driest since: 2018 |
How many inches of rain did Buffalo NY get?
Climate Averages
| Buffalo, New York | United States | |
|---|---|---|
| Rainfall | 38.5 in. | 38.1 in. |
| Snowfall | 84.8 in. | 27.8 in. |
| Precipitation | 163.9 days | 106.2 days |
| Sunny | 155 days | 205 days |
Why is it raining so much in Washington?
Low pressure systems are one of the main reasons the Pacific Northwest is so wet and rainy. Building in the Gulf of Alaska, these storms barrel right toward Oregon, Washington, and Canada, dumping condensation on the way.
What is cm rainfall?
The amount of rainfall is expressed as depth in centimeters (or millimeters) which falls on a level surface. Intensity of rainfall is the rate at which it falls at any one time. It is expressed as cm per hour or mm per hour. Rainfall is measured by means of rain gauges.
How many Litres is 1mm of rain?
With a rainfall of 1 mm, every square metre receives 1 litre of rain water. A rainfall of 1 mm supplies 0.001 m3, or 1 litre of water to each square metre of the field.
What is the wettest month in Buffalo NY?
November
3.19in. 3.92in. 3.80in. The driest month in Buffalo is February with 2.42 inches of precipitation, and with 3.92 inches November is the wettest month.
